Dolf Gielen is director for technology and innovation at the International Renewable Energy Agency since 2011. He holds a PhD from Delft University of Technology in Delft, the Netherlands. He has studied Chemical Engineering at Eindhoven University of Technology and Environmental Sciences at Utrecht University in the Netherlands. Prior to joining IRENA he has worked for the International Energy Agency and the United Nations. Gielen spent two years as a fellow at the National Institute for Environmental Studies in Japan. He has coauthored more than 100 papers in peer reviewed journals and contributed to numerous books and research reports.